关键词: 精细评价, 油藏特征, 主控因素, 侧向封堵, 深县凹陷, 深南背斜

Abstract: Shennan anticline is a main oil-bearing composition of Shenxian sag with “small, fractured, lean and disseminated” reservoirs. Based on analyzing the factors restricting exploration and development, this paper proposed “re-recognition, meticulous evaluation and overall deployment” to re-evaluate hydrocarbon reservoir. Favorable prospecting targets are discovered through carrying out high-resolution seismic data merging processing, oil group division and correlation based on well-log and seismic data, multi-means meticulous structure interpretation, meticulous sandbody distribution analysis, and meticulous old well reexamination. The research indicates that the reservoir sandbody of Shennan anticline develops moderately and bears oil throughout all its structure, especially, toothbrush-shape reservoir model could be generated in anticlinal wing. This model features in multiple oil bearing series, big total thickness, and high production. The fault cross-range is the main factor controlling reservoirs, which is mainly determined by lithological array and evolving process. The evolving process of inherited faults is favorable for creating shale smear, which endows the faults with better cross-range. Considering the characteristics of the reservoir, multi-target deviated well drilling is the most effective way to enhance exploration. The good effect has been proved by practice